Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6039914 | Method of converting asphalt composition roofing shingles into dimensional construction products | Larry M Gehrke, Michael Gehrke, Gabriel P. Gehrke | 2000-03-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6039914 | Method of converting asphalt composition roofing shingles into dimensional construction products | Larry M Gehrke, Michael Gehrke, Gabriel P. Gehrke | 2000-03-21 |